<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
  <style>
    #d1{
      width: 100px;
      height: 100px;
      background-color: red;
        margin:25px 0 0 25px;
        overflow: hidden;
    }
    #d1>div{

        width: 50px;
        height: 50px;
        background-color: blue;
        margin:25px 0 0 25px;
    }
    #d2{
        width: 100px;
        height: 100px;
        border: 5px solid green;
        border-radius: 5px;
        margin-left: 125px;
        padding :50px 0 0 50px;
        box-sizing: border-box;

    }
  </style>
</head>
<body>
<div id="d1"><div ></div>
</div>
<div id="d2">哈喽</div>
</body>
</html>